2 * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* Internal EC functions for other submodules: not for application use */
12 #ifndef OSSL_CRYPTO_ECX_H
13 # define OSSL_CRYPTO_ECX_H
16 # include <openssl/opensslconf.h>
18 # ifndef OPENSSL_NO_EC
20 # include <openssl/core.h>
21 # include <openssl/e_os2.h>
22 # include <openssl/crypto.h>
23 # include <openssl/x509.h>
24 # include "internal/refcount.h"
25 # include "crypto/types.h"
27 # define X25519_KEYLEN 32
28 # define X448_KEYLEN 56
29 # define ED25519_KEYLEN 32
30 # define ED448_KEYLEN 57
32 # define MAX_KEYLEN ED448_KEYLEN
34 # define X25519_BITS 253
35 # define X25519_SECURITY_BITS 128
37 # define X448_BITS 448
38 # define X448_SECURITY_BITS 224
40 # define ED25519_BITS 256
41 /* RFC8032 Section 8.5 */
42 # define ED25519_SECURITY_BITS 128
43 # define ED25519_SIGSIZE 64
45 # define ED448_BITS 456
46 /* RFC8032 Section 8.5 */
47 # define ED448_SECURITY_BITS 224
48 # define ED448_SIGSIZE 114
58 #define KEYTYPE2NID(type) \
59 ((type) == ECX_KEY_TYPE_X25519 \
61 : ((type) == ECX_KEY_TYPE_X448 \
63 : ((type) == ECX_KEY_TYPE_ED25519 \
70 unsigned int haspubkey:1;
71 unsigned char pubkey[MAX_KEYLEN];
72 unsigned char *privkey;
75 CRYPTO_REF_COUNT references;
79 size_t ossl_ecx_key_length(ECX_KEY_TYPE type);
80 ECX_KEY *ossl_ecx_key_new(OSSL_LIB_CTX *libctx, ECX_KEY_TYPE type,
81 int haspubkey, const char *propq);
82 void ossl_ecx_key_set0_libctx(ECX_KEY *key, OSSL_LIB_CTX *libctx);
83 unsigned char *ossl_ecx_key_allocate_privkey(ECX_KEY *key);
84 void ossl_ecx_key_free(ECX_KEY *key);
85 int ossl_ecx_key_up_ref(ECX_KEY *key);
86 ECX_KEY *ossl_ecx_key_dup(const ECX_KEY *key);
88 int ossl_x25519(uint8_t out_shared_key[32], const uint8_t private_key[32],
89 const uint8_t peer_public_value[32]);
90 void ossl_x25519_public_from_private(uint8_t out_public_value[32],
91 const uint8_t private_key[32]);
94 ossl_ed25519_public_from_private(OSSL_LIB_CTX *ctx, uint8_t out_public_key[32],
95 const uint8_t private_key[32],
98 ossl_ed25519_sign(uint8_t *out_sig, const uint8_t *message, size_t message_len,
99 const uint8_t public_key[32], const uint8_t private_key[32],
100 OSSL_LIB_CTX *libctx, const char *propq);
102 ossl_ed25519_verify(const uint8_t *message, size_t message_len,
103 const uint8_t signature[64], const uint8_t public_key[32],
104 OSSL_LIB_CTX *libctx, const char *propq);
107 ossl_ed448_public_from_private(OSSL_LIB_CTX *ctx, uint8_t out_public_key[57],
108 const uint8_t private_key[57], const char *propq);
110 ossl_ed448_sign(OSSL_LIB_CTX *ctx, uint8_t *out_sig, const uint8_t *message,
111 size_t message_len, const uint8_t public_key[57],
112 const uint8_t private_key[57], const uint8_t *context,
113 size_t context_len, const char *propq);
116 ossl_ed448_verify(OSSL_LIB_CTX *ctx, const uint8_t *message, size_t message_len,
117 const uint8_t signature[114], const uint8_t public_key[57],
118 const uint8_t *context, size_t context_len, const char *propq);
121 ossl_x448(uint8_t out_shared_key[56], const uint8_t private_key[56],
122 const uint8_t peer_public_value[56]);
124 ossl_x448_public_from_private(uint8_t out_public_value[56],
125 const uint8_t private_key[56]);
128 /* Backend support */
135 ECX_KEY *ossl_ecx_key_op(const X509_ALGOR *palg,
136 const unsigned char *p, int plen,
137 int pkey_id, ecx_key_op_t op,
138 OSSL_LIB_CTX *libctx, const char *propq);
140 int ossl_ecx_public_from_private(ECX_KEY *key);
141 int ossl_ecx_key_fromdata(ECX_KEY *ecx, const OSSL_PARAM params[],
142 int include_private);
143 ECX_KEY *ossl_ecx_key_from_pkcs8(const PKCS8_PRIV_KEY_INFO *p8inf,
144 OSSL_LIB_CTX *libctx, const char *propq);
146 ECX_KEY *ossl_evp_pkey_get1_X25519(EVP_PKEY *pkey);
147 ECX_KEY *ossl_evp_pkey_get1_X448(EVP_PKEY *pkey);
148 ECX_KEY *ossl_evp_pkey_get1_ED25519(EVP_PKEY *pkey);
149 ECX_KEY *ossl_evp_pkey_get1_ED448(EVP_PKEY *pkey);
150 # endif /* OPENSSL_NO_EC */